发明名称 DOZE DETECTION METHOD AND APPARATUS THEREOF
摘要 A doze detection method, which accurately detects a blink burst and improves speed and accuracy of doze detection, includes measuring a state where the eye is substantially open as an open eye time and another state as a closed eye time, defining a time shorter than an average blink interval of a healthy adult in an alert state as a first threshold time; defining a time longer than an average closed eye time of a healthy adult in an alert state as a second threshold time; and defining blinks as a blink burst when detecting an eye opening equal to or shorter than the first threshold time. A doze state is determined when the closed eye time of a blink among the blinks during the blink burst reaches at least the second threshold time, the blink occurring after an open eye time equal to at most the first threshold time.
申请公布号 US2014205149(A1) 申请公布日期 2014.07.24
申请号 US201214342720 申请日期 2012.09.04
申请人 Nakamura Kiyomi;Takano Hironobu 发明人 Nakamura Kiyomi;Takano Hironobu
分类号 G06K9/00 主分类号 G06K9/00
代理机构 代理人
主权项 1. A doze detection method, comprising: measuring, among states from an eye closure to an eye opening of a human eye, a state where the eye is substantially open as an open eye time and the other state as a closed eye time; defining a time that is relatively shorter than an average blink interval of healthy adult in an alert state as a first threshold time; defining a time that is relatively longer than an average closed eye time of healthy adult in an alert state as a second threshold time; when detecting an eye opening equal to or shorter than the first threshold time, defining blinks before and after the eye opening as a blink burst; and determining to be a doze state when a closed eye time of a blink among the blinks during the blink burst reaches the second threshold time or more, the blink occurring after an open eye time equal to or shorter than the first threshold time.
地址 Toyama-shi JP